<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='css/bootstrap.css') }}">
</head>

<body>
    <h1>Index</h1>
    {# 显示 Flash Message #}
    {% for msg in get_flashed_messages() %}
    <div class="alert alert-danger">{{ msg }}</div>
    {% endfor %}

</body>

</html>